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Improved NCSF playback and seeking by using a permanent buffer instead of allocating a new one on every readData or seek operation

CQTexperiment
Chris Moeller 2013-10-21 05:16:33 -07:00
parent 290ed6c239
commit 4c80ec01aa
1 changed files with 19 additions and 8 deletions
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27
Plugins/HighlyComplete/HighlyComplete/HCDecoder.mm
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@ -628,6 +628,8 @@ struct ncsf_loader_state
std::vector<uint8_t> sdatData;
std::unique_ptr<SDAT> sdat;
std::vector<uint8_t> outputBuffer;
ncsf_loader_state() : sseq( 0 ) { }
};
@ -1059,6 +1061,8 @@ static int twosf_info(void * context, const char * name, const char * value)
player->Setup( sseqToPlay );
player->Timer();
state->outputBuffer.resize( 1024 * sizeof(int16_t) * 2 );
emulatorCore = ( uint8_t * ) player;
emulatorExtra = state;
}
@ -1237,12 +1241,20 @@ static int twosf_info(void * context, const char * name, const char * value)
}
else if ( type == 0x25 )
{
size_t buffer_size = frames * sizeof(int16_t) * 2;
std::vector<uint8_t> buffer;
buffer.resize( buffer_size );
Player * player = ( Player * ) emulatorCore;
player->GenerateSamples(buffer, 0, frames);
memcpy( buf, &buffer[0], buffer_size );
ncsf_loader_state * state = ( ncsf_loader_state * ) emulatorExtra;
std::vector<uint8_t> & buffer = state->outputBuffer;
unsigned long frames_to_do = frames;
while ( frames_to_do )
{
unsigned frames_this_run = 1024;
if ( frames_this_run > frames_to_do )
frames_this_run = (unsigned int) frames_to_do;
player->GenerateSamples(buffer, 0, frames_this_run);
memcpy( buf, &buffer[0], frames_this_run * sizeof(int16_t) * 2 );
buf = ((uint8_t *)buf) + frames_this_run * sizeof(int16_t) * 2;
frames_to_do -= frames_this_run;
}
}
else if ( type == 0x41 )
{
@ -1441,10 +1453,9 @@ static int twosf_info(void * context, const char * name, const char * value)
}
else if ( type == 0x25 )
{
std::vector<uint8_t> buffer;
Player * player = ( Player * ) emulatorCore;
buffer.resize(1024 * sizeof(int16_t) * 2);
ncsf_loader_state * state = ( ncsf_loader_state * ) emulatorExtra;
std::vector<uint8_t> & buffer = state->outputBuffer;
long frames_to_run = frame - framesRead;